Tonight each couple dances a samba routine and all will dance a Viennese waltz together, in this fourth installment of ABC's hit summer dance series. At the end of the show, one couple will be eliminated.

In this third installment of ABC's hit summer dance series, John O'Hurley, Rachel Hunter and their partners each dance the tango, while Evander Holyfield, Joey McIntyre, Kelly Monaco and their partners dance a jive. Still, no matter how fleet on their feet, one couple will be eliminated at the end of this episode. How will the votes go?

Joey McIntyre, John O'Hurley, Evander Holyfield and their partners each dance a quickstep routine, while Rachel Hunter, Trista Sutter and Kelly Monaco and their partners dance a rumba. But no matter how fancy the footwork, one couple will be eliminated at the end of the competition. How will the judges and viewers vote?

Kelly Monaco and Alec Mazo - Currently starring on the ABC Daytime drama "General Hospital," Kelly also starred on the network's other daytime drama "Port Charles," for which she received her first Daytime Emmy nomination. She has also appeared on "Spin City" and a variety feature films. Her partner, Alec Mazo, began dancing at age five in his native Russia. He was the Emerald Ball Latin Champion and placed first in the 2001 International Grand Ball and the 2001 Holiday Ball. He also runs the largest and most successful dance studio in Southern California. Alec recently began competing professionally with his girlfriend of four years, Edyta Sliwinska, who is partnered with Evander Holyfield for this competition.